OK thanks a lot !
I was thinking that the demos may be just looking at the device name string to find “quadro” in order to accept running. But it don’t seems to be the case since your geforce is well recognized as geforce by the system. NVIDIA must have another internal way to detect quadros.
Maybe it’s because it’s a dual GPUs card…
Badly I didn’t find any way to make the demos running on my card

Whatever, thanks for your help !

PS: I have seen the Turner scene demo at Siggraph, and I didn’t find it so impressive, it seems really slow to me, especially only for tracing two procedural spheres and a plane !

I’m disappointed. Doing real-time ray-tracing on procedural spheres and planes does not require a graphic card ! I was expecting something more impressive from NVIDIA. This is at best a tutorial for Optix programmers.